Malicious PDF — malware analysis report

Static analysis result for SHA-256 32478b4dede8c227…

MALICIOUS

PDF

41.9 KB Created: 2020-08-19 09:32:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90a5d9c1ec9ea252781d29af60b8e5c3 SHA-1: c2372ade8e1bedf3296d1cc845ee9505e407389b SHA-256: 32478b4dede8c2270551945d1231ebd4ccac45bc949e113c2fbe659a5fd029d3
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=permutations+probability+word+problems+worksheet+answers'. This URL is presented within the document body, suggesting a lure to trick users into clicking it. The file also contains a large number of embedded links to Shopify domains, many of which are likely part of a link farm to improve search engine ranking for malicious content. No scripts were extracted from this sample.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=permutations+probability+word+problems+worksheet+answers
    • http://files.inspirenetworks.net/uploads/1/3/1/4/131437276/lotoxo-perupekarino.pdf
    • http://files.dreamaginationrr.com/uploads/1/3/1/4/131437599/minitanowarurige.pdf
    • https://cdn.shopify.com/s/files/1/0434/7972/8281/files/21493539403.pdf
    • https://cdn.shopify.com/s/files/1/0437/1002/1787/files/34387174519.pdf
    • https://cdn.shopify.com/s/files/1/0432/0513/2456/files/pagiraxijim.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/zudulopovuvute.pdf
    • https://cdn.shopify.com/s/files/1/0429/9728/5027/files/zofofapoti.pdf
    • https://cdn.shopify.com/s/files/1/0436/2820/0096/files/61707355016.pdf
    • https://cdn.shopify.com/s/files/1/0432/5926/5188/files/wagapulinafezisupidevo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0820/4704/files/42922511736.pdf
    • https://cdn.shopify.com/s/files/1/0438/8998/3643/files/how_to_set_time_on_ihome.pdf
    • https://cdn.shopify.com/s/files/1/0431/5657/0274/files/kuradesinebazuludaw.pdf
    • https://cdn.shopify.com/s/files/1/0436/5769/1289/files/rapadidisikafavavepi.pdf
    • https://cdn.shopify.com/s/files/1/0428/6332/9446/files/solosabojupox.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • https://cdn.shopify.com/s/files/1/0429/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000632e.bin
7f87f10051540d16786b8c1f2bf3de04ba1109d050bde1fb4a000a97b5ded2a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x632E 5600 bytes
font_01_sfnt_off0000760e.bin
be673415864291848733986711cbac6f022456336b0ecdd5f086e8f29f59dbc3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x760E 10164 bytes

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